One customer even built MISON into a new labour agreement that mandated improvements for workers every year. As part of the deal, the company shifted to MISON.
When another customer, who had nitrogen oxide mixed into the company’s shielding gas on site, switched it off, the employees began complaining.
"They couldn't really put their finger on what it was, but they felt in their throat, that there was a difference," Bengtsson remembers.
MISON can also improve the bottom line for companies, reducing the number of sick days and use of less skilled temp workers, while boosting morale and productivity.
According to Wikström, a better working environment is also key to attracting younger employees.
"I think that's one of the big things we need to focus on to attract young people, because I don't think they are going to put up with standing in fumes if it might be toxic for them in the long-term," she explains.
For Bengtsson, who has been working with MISON for three of its four decades, the 40th anniversary is an opportunity to take stock.
"It's something that we are quite proud of – that we were the only gas company to make such a product in the service of the welder," he says.
"And hopefully, it will still be making an important contribution to their working environment in 40 years to come."